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An amperometric sensor for hydrazine based on nano-copper oxide modified electrode

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Abstract

A sensitive hydrazine sensor has been fabricated using copper oxide nanoparticles modified glassy carbon electrode (GCE) to form nano-copper oxide/GCE. The nano-copper oxide was electrodeposited on the surface of GCE in CuCl2 solution at −0.4 V and was characterized by Scanning electron microscopy and X-ray diffraction. The prepared modified electrode showed a good electrocatalytic activity toward oxidation of hydrazine. The electrochemical behavior of hydrazine on nano-copper oxide/GCE was explored. The oxidative current increased linearly with improving concentration of hydrazine on nano-copper oxide/GCE from 0.1 to 600 μM and detection limit for hydrazine was evaluated to be 0.03 μM at a signal-to-noise ratio of 3. The oxidation mechanism of hydrazine on the nano-copper oxide/GCE was also discussed. The fabricated sensor could be used to determine hydrazine in real water.

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Acknowledgments

We thank the National Natural Science Foundation of China (Grant No. 20775002) for financial support. The work was supported by Program for Innovative Research Team in Anhui Normal University.

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Authors and Affiliations

  1. College of Chemistry and Materials Science, Anhui Key Laboratory of chemo-Biosening, Anhui Normal University, Wuhu, 241000, People’s Republic of China

    Zhaojing Yin, Liping Liu & Zhousheng Yang

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  1. Zhaojing Yin
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  2. Liping Liu
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  3. Zhousheng Yang
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Correspondence to Zhousheng Yang.

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Yin, Z., Liu, L. & Yang, Z. An amperometric sensor for hydrazine based on nano-copper oxide modified electrode. J Solid State Electrochem 15, 821–827 (2011). https://doi.org/10.1007/s10008-010-1161-2

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  • DOI: https://doi.org/10.1007/s10008-010-1161-2

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